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[ARM] 4506/1: HP Jornada 7XX: Addition of SSP Platform Driver

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These patches add full SSP/MCU support for the HP Jornada 720
machine.  Its needed to handle keyboard, touchscreen, battery
and backlight/lcd.

The main driver exports functions and the header file exports
the command values. When talking to the MCU the general procedure
is to start MCU, send command (using ssp_inout(command)), the
proper reply is always TXDUMMY.  After receiving TXDUMMY you can
send the value you wish pushed (for example brightness level).
End with ssp_end() so the spinlock gets unlocked.

Drivers using this havent been implemented yet, but will shortly.

Signed-off-by: Kristoffer Ericson <[email protected]>
Signed-off-by: Russell King <[email protected]>
This commit is contained in:
Kristoffer Ericson 2007-07-20 18:22:57 +01:00 • committed by Russell King
commit 69ebb22277
4 changed files with 241 additions and 2 deletions
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27
include/asm-arm/arch-sa1100/jornada720.h Normal file
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/*
* include/asm-arm/arch-sa1100/jornada720.h
*
* This file contains SSP/MCU communication definitions for HP Jornada 710/720/728
*
* Copyright (C) 2007 Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
* Copyright (C) 2000 John Ankcorn <jca@lcs.mit.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
/* HP Jornada 7xx microprocessor commands */
#define GETBATTERYDATA 0xc0
#define GETSCANKEYCODE 0x90
#define GETTOUCHSAMPLES 0xa0
#define GETCONTRAST 0xD0
#define SETCONTRAST 0xD1
#define GETBRIGHTNESS 0xD2
#define SETBRIGHTNESS 0xD3
#define CONTRASTOFF 0xD8
#define BRIGHTNESSOFF 0xD9
#define PWMOFF 0xDF
#define TXDUMMY 0x11
#define ERRORCODE 0x00